Unipolar non-steroid-eluting lead Unipolar non-steroid-eluting lead Unipolar non-steroid-eluting lead Unipolar non-steroid-eluting lead Bipolar steroid-eluting lead Bipolar steroid-eluting lead Bipolar steroid-eluting lead Bipolar steroid-eluting lead p-value between leads p-value between leads
Lead location Variables Months mean (SD) At dis.* At f/u+ p-value within lead Months mean (SD) At dis.* At f/u+ p-value within lead At dis. a At f/u b
Mean (5%-95%) Mean (5%-95%) Mean (5%-95%) Mean (5%-95%)
RA Obs. § 7 4 2 1
f/u time 19.00 (11.37) 19
Impedance (Ω) 397.0 (240.0-533.0) 384.0 (326.0-428.0) 0.84 616.5 635.0 - 0.10 -
Sensing threshold (mV) 2.73 (0.50-5.60) 3.05 (1.30-4.80) 0.87 2.00 - 0.52 -
Pacing threshold (µJ) 0.57 (0.25-0.75) 1.56 (0.75-3.25) 0.04 1.87 (0.25-3.50) 0.50 - 0.11 -
LV Obs. § 37 26 21 18
f/u time 15.15 (10.79) 14.27 (7.45)
Impedance (Ω) 445.4 (285.0-568.0) 431.0 (250.0-667.0) 0.64 756.0 (431.0-1325.0) 618.1 (266.0-1384.0) 0.16 <0.001 0.005
Sensing threshold (mV) 10.45 (3.00-18.50) 10.86 (3.00-22.00) 0.78 14.37 (2.80-22.40) 12.84 (2.00-22.40) 0.54 0.03 0.34
Pacing threshold (µJ) 0.89 (0.25-3.00) 2.42 (0.50-4.50) <0.001 0.73 (0.25-1.50) 1.01 (0.50-2.00) 0.12 0.44 0.002
RV Obs. § 12 7 6 4
f/u time 19.11 (13.18) 12.00 (4.90)
Impedance (Ω) 433.4 (250.0-779.0) 393.7 (250.0-598.0) 0.55 604.8 (117.0-942.0) 574.0 (480.0-640.0) 0.85 0.12 0.03
Sensing threshold (mV) 7.22 (2.00-15.00) 6.03 (3.50-9.00) 0.62 5.33 (2.00-15.60) 11.34 (7.00-15.68) 0.22 0.39 0.26
Pacing threshold (µJ) 1.22 (0.50-5.00) 2.67 (0.50-7.50) 0.12 1.17 (0.75-2.50) 1.12 (0.50-1.75) 0.92 0.91 0.27